Weblogic Administrator Interview Questions and Answers

Check server logs, monitor system resources, analyze application performance, and troubleshoot network connectivity.

• Check server logs for any errors or warnings that may be impacting user experience.

• Monitor system resources such as CPU, memory, and disk usage to ensure they are not being maxed out.

• Analyze application performance metrics to identify any bottlenecks or issues affecting user experience.

• Troubleshoot network connectivity to ensure users can access the application ...read more

User session failover can be achieved through session replication and load balancer configuration.

• Implement session replication across multiple Weblogic servers

• Configure load balancer to redirect user requests to available servers

• Use clustering to ensure high availability of user sessions

WebLogic Server architecture is a multi-tiered, distributed system designed for enterprise applications, supporting scalability and reliability.

• WebLogic Server is built on a modular architecture, allowing components to be loaded as needed.

• It consists of a domain, which is a logically related group of resources, including servers and applications.

• The core components include Managed Servers, Admin Server, and Clusters for load balancing.

• WebLogic supports various protocols like ...read more

Use the 'find' command to locate and delete older log files in Linux.

• Use the 'find' command with the '-mtime' option to specify the number of days since the file was last modified.

• Example: find /path/to/logs -type f -mtime +7 -exec rm {} \; will delete log files older than 7 days.

A cluster is a group of servers that work together to provide high availability and scalability for applications.

• Improves performance by distributing workload among multiple servers

• Enhances reliability by providing failover support

• Allows for easier management and maintenance of servers

• Examples: Weblogic cluster, Hadoop cluster

Patching refers to the process of updating software to fix bugs or security vulnerabilities.

• Patching involves downloading and installing updates from the software vendor.

• It is important to test patches before deploying them to ensure they do not cause any issues.

• Patching should be done regularly to ensure software is up-to-date and secure.

• Examples of patching include installing Windows updates or updating Java on a server.

JDBC stands for Java Database Connectivity. It is a Java API that allows Java programs to access databases.

• JDBC provides a standard set of interfaces for accessing relational databases.

• It allows Java programs to connect to a database, execute SQL queries, and retrieve results.

• JDBC drivers are used to connect to different types of databases, such as Oracle, MySQL, and SQL Server.

• JDBC is used in many Java-based applications, such as web applications and enterprise applications.